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I'm having a weird problem here. I upgraded a Windows XP computer from IE6 to IE8 yesterday and everything seemed to work normally until today. Now I can't open any browser on this computer. The computer had Google Chrome installed and it suddenly disappeared, I installed it again and now it dowsn't open either. I also installed Firefox and the same thing happened. The computer had no anti virus, I installed Ad-Aware, run a full scan and it detected some malware, but browsers are still not working

Any ideas?

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closed as too localized by Andrew Lambert, ChrisF, Diogo, BBlake, CharlieRB Nov 14 '12 at 15:23

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Check your process list for anything suss, and install some real AV. Because it really does sound malicious code to me... –  shadow Nov 14 '12 at 5:16
    
Have you tried System Restore ? –  Shail Nov 14 '12 at 5:27

2 Answers 2

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Sounds like the computer is infected with some type of malware, that is running a constant "kill xxx" command, causing certain apps to not be able to run. If anti-virus software is unable to clean it, I'd say just wipe and re-install the OS, this should fix the problem.

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Finally I solved the problem by restoring the PC to a previous state before installing IE8 and installed a decent antivirus, it seems to be working fine now :)

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